<!DOCTYPE html>
<html>
    <head>
	<meta charset="utf-8" />
		<title></title>
<!--[if lt IE 9]><!-->
    		<script src="http://code.jquery.com/jquery-1.11.3.min.js "></script>
<!--<![endif]-->
<!--[if gte IE 9]><!-->
			<script src="https://code.jquery.com/jquery-3.2.1.min.js "></script>
<!--<![endif]-->
	<style>
body {
	background-color: #eef;
}
div {
	padding: 20px;
}
</style>
</head>
<body>
 
<button value="Test" name="Test" id="checkMetaKey">点我！</button>
<div id="display"></div>
<script>
	$( "#checkMetaKey" ).click(function( event ) {
		$( "#display" ).text( event.metaKey );
	});
</script>
 
</body>
</html>